Supercross Round #4 in Glendale | 450SX EXTENDED HIGHLIGHTS | Motorsports on NBC

Two weeks after scoring his first Supercross win in three years, Ken Roczen finds himself back atop the podium, not once but three times, winning all three Mains of the Triple Crown event in Glendale, Arizona. #NBCSports #Supercross #KenRoczen » Subscribe to Motorsports on NBC: » Want more Supercross? Check out NBC Sports Gold: » Get the latest motor sports news on NBC Sports: